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Transcript 
Cell Reproduction


Prokaryotes
Bacteria
Eukaryotes
Plants & animals
copyright cmassengale
Prokaryotes
 Lack
a nucleus
 Have a single chromosome
 Reproduce by binary fission
 Include bacteria
copyright cmassengale
Binary Fission of Bacterial Cell
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E. Coli Dividing by Binary
Fission
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Eukaryotes
 Cell
cycle- complete life of
the cell
copyright cmassengale
Cell Cycle






Stages in growth &
division
G1 Phase
S Phase
G2 Phase
M phase -mitosis
Cytokinesis
copyright cmassengale
Interphase First Part G1
Phase
 First
growth stage
 Cell increases in size
 Cell prepares to copy its
DNA
copyright cmassengale
2nd part of Interphase:
Synthesis Phase
 Copying
of all of DNA’s
instructions
 Chromosomes duplicated
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Third part of Interphase
G2 Phase
 Time
between DNA synthesis
& mitosis
 Cell continues growing
 Needed proteins produced
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M-phase mitosis
 Cell
growth stop
 Cell’s energy used to make 2
daughter cells
 Called mitosis
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Interphase
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Stages of Mitosis
 Prophase
 Metaphase
 Anaphase
 Telophase
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Cells Undergoing Mitosis
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Prophase
 Chromosomes
become visible
 Nuclear membrane disappears
 Nuceolus disappears
 Spindle begins to form
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Human Chromosomes
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Metaphase
 Chromosomes
equator.
line up on the
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Metaphase
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Anaphase
 Cell chromosomes are
separated
 Spindle fibers shorten so
chromosomes pulled to ends of
cell
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copyright cmassengale
Anaphase
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Telophase
 Separation
of chromosomes
completed
 Nucleus & nucleolus reform
 Chromosomes uncoil
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Telophase
Plant
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Animal
Cytokinesis
 Occurs
after chromosomes
separate
 Forms two, identical
daughter cells
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Cytokinesis
Cell Plate Forming in Plant Cells
copyright cmassengale
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